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To debug D programs you need to use a debugger that understands the format of the debug symbols information that your chosen compiler produces. The quality of the debug symbols information might vary depending on which compiler you use and its underlying debug format. For example, some compiler configurations may present the names of variables and/or functions in it's C mangled form, instead of the natural D name.

Debugging support by compiler

Compiler+Platform Format Debugger Supported functionality
DMD-Win32 OMF Mago/VisualD Good support: Breakpoints; Stack frames; Mostly pretty names ('.' shows up as '@'); Variable inspection; Visual Studio based.
Mago-MI Good support: Breakpoints; Stack frames; Variable inspection; GDB/MI compatible interface for Mago debugger.
WinDbg Supplied with the main D compiler zip file download. Overview
ddbg Doesn't seem to be working well. Project no longer maintained.
OllyDbg 2 Reasonable support when assisted by cv2pdb; stack frames; mangled symbols; shows source code alongside disassembly. Note: v2.01 has a bug that may cause frequent crashes when reading PDB files. Details and patch here.
DMD-Win64 COFF Mago/VisualD TODO: same level of support as for win32?


DWARF GDB Good support: Breakpoints; Stack frames; Pretty names; Variable inspection;
ZeroBUGS "Modular debugger for C/C++/D programming languages (and virtually anything else that supports Stabs/DWARF debug formats)". Supported debugging functionality??
LDC-MinGW DWARF - DWARF debug symbol info seems to be broken for LLVM compiled with MinGW note


? GDB Limited/outdated support? According to Jacob Carlberg:

"D symbols need to be prefixed with an extra underscore." "Line numbers don't work."


Graphical debugger frontends

Frontends providing support to a command-line debugger mentioned in the previous section.

Debugger Frontend Description Platform
GDB Mono-D MonoDeveloped-based full D IDE. Has integration with the GDB debugger.

"Debugging (using MonoDevelop’s integrated gdb support on Linux currently)"

GDB DDT Eclipse-based IDE. Has integration with the GDB debugger, including D support. (Debugging support is based on Eclipse CDT) Linux, Windows, MacOS
GDB Nemiver Graphical frontend to the GDB debugger, which supports full D syntax from version 7.2. Linux
GDB CGDB Command line frontend to the GDB debugger, which supports full D syntax from version 7.2.Shows code and the GDB console in split windows. Linux, MacOS
GDB DDD GNU DDD is a graphical front-end for command-line debuggers such as GDB. Usual front-end features such as viewing source code, viewing variables, etc. Linux
GDB Affinic Debugger Affinic Debugger GUI .aka. ADG, is designed as a graphical user interface for various debuggers. This version is specifically targeted on GDB, the GNU debugger. Linux, Windows, MacOS
GDB DlangIDE D language IDE written in D. Supports GDB-MI compatible debuggers. Linux, Windows, MacOS
GDB Dexed - GDB commander Visual debugging with GDB in one of the IDE widget. Linux
mago-mi DlangIDE D language IDE written in D. Supports GDB-MI compatible debuggers. Windows
mago-mi DDT Eclipse-based IDE. Supports mago-mi debugger using GDB-MI interface. Windows
GDB / LLDB VS Code with C/C++ Extension Visual Studio Code along with the C/C++ extension which allows for debugging native applications. It is possible to use the extension's debugger with D. Linux, MacOS
GDB / LLDB / mago-mi Native Debug (VS Code Extension) Debugging through Visual Studio Code's debugging UI. Linux, Windows, MacOS